1、Ultrasonic fish finder, can be used for offshore fishing, ice fishing, lake fishing, sea fishing, river fishing, etc. 2、Small in size, light in weight, and portable, it can also be used on mobile kayaks at speeds less than 5 miles per hour. 3、With 5 modes of sensitivity selectable, will automatically alarm when fish is detected, which is highly practical. 4、The fishing sonar sensor has a 25‑foot cable and a movable sensor float that can detect fish. 5、With battery saving mode, the battery can work continuously for 4‑5 hours when full charged. 6、Detection range is within 45 degrees underwater, and detection depth range is between 3ft (1m) and 328ft (100m) below fishery sonar sensor. 1 x Fish Finder (Battery Not Included)1 x Fish Detecting Tool2 x Accessory1 x Manual Condition: 100% Brand NewItem Type: Fish FinderMaterial: ABSBattery Attributes: 4 x AAA Battery 1300mAh (Battery Not Included)Weight: Approx. 557g / 19.6ozDepth Range: 100m / 328ftMinimum Depth Range: 0.6m / 2.0ft